Friction-clutch.



J. J. ZEITZ." FRICTION CLUTCH.

APPLICATION FILED FEB.3, 190s.

Patented Dec. 8, I908.

WZYIZE55E J()l-li\- .l. ZlCllf OF CLEVELAND, OHIO, ASSIGNOR TO Till)AMERICAN MULTIGHAP land, in the county of (.uyafhoga and State of Ohio,have invent ed a certain new and useful improvement in 'l rictionClutches, (Case 32,) ol which the l'ollowing is a lull, clear, and exactdescription, i'e'lerence being bad to the there is a spring one end ofwhich is anchored, at 33, to thed'isk l and the other end, as at 34, tothe disk 11, the s ring eX tending a conve 'i'ient p accompanyiiigdrawings.

'l he object ol' this in vention is to provide a very simple andetlicient friction clutch UN Si 'iATlZJhi PATENT,

0 (1H whom it may concern:

OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

FRICTION-CLUTCH.

Specification of Letters Patent.

Application filed February 3, 1908. Serial No. 413,965.

adapted to tLLIl 'JHHtlUZLlly throw itself into distance around the (l1engagement. when released.

Another teat ure of the clutch is thatit may factory. automaticallybreak such engagement whenturn the member relatively to tl esired, as,for example, at the end of a complete rotation.

ever d through it.

The invention consists oi the means by which I attain t be above ends,as hereinal'ier der, which may be at the peripher as indimore fullyexplained and as set out definitely eatietl at 28 and 29. in the claims.

As shown in thedrawing, l igurel a side elevat ion ol' my clutch with asuitable releasing lever: Fin; 2 is an edge view of such It is avertical section of the 4 is a sidc elevation adjacent to clutch; higsame; Fig

as shown in Fig. 1.

the outer lace oi the le'l't hand clutch disk (as volves idly therein.

shown in Figs. 2 am engaged Fi partly I resent two disks placed side byside and loosely journaled on a shalt .12. one of these disks, as 1 l,is a suitable member is) the clutch being dis- 5 a similar view showingthe clutch. engaged; and Fig; his a face view, ii'okcii away, o't theclutch disk which is behind the disk shown in l igs. 4 and 5.

As shown in the drawings, it) and it reptwisting it on the shalt, as itwere, and thus carrying the rollers into the constricted portion of therecess 21, as shown in Fig. 5. This binds the members to Secured towhich it is intended to periodically clutch to they rotate therewith.

tirdinal and '1 (j which screws 17.

The (lisli lO is provided with one or more radially extending recesses18 leading from the bore oi the Zlisk, three o'l'these rcce s sition byreasonof the trio 'lhese recesses are occupid shaft, and this movementbrings the rollers by rollers 2t) which extend parallel with the intotree portion of the recess 21, releasing shattacross the two-disks, theroller occupythe clutch. ing the recess with vent any binding. with abeing shown.

This member is illusi' iu-tted by the cam secured by screws 19 to themember 11. The parts are prevented from longirow. VVhenever' after theclutch has .engaged, the member 30 is returned to initial position, theshoulder 28, at some point dur-- mg that rotation, engages the block 30which stops the rotation of that disk,---while the other disk advancesto the corres vending polrive ol' the displacement by suitable collars15 are secured to the shalt by set similar numberjo't' recesses whichsuch slrs. spring is a helix, which has b structure is free from tl Whenit is desired to e engage, the two members are released, as, forexample, by the swinging of the lever 31. When released, the springadvances the member 10 with reference ti 1 1 so as to bring the rollers20 fro 'lhe clutch is well adaptol the recesses 21, Where ti ed forperiodicallyclutching a member to a n COMPANY,

Patented. Dec. 8, 190$.

roller or rollers occupy, but these recesses, es Be it known that l,Jenn J. ZEITZ, a eitiindicated by 21 are arc-shaped, and are nonzen ol'the United States, residing at Cleveconcentric with the shaft, the outerwell of the recess, while nearly concentric with the shaft, approachingit sli htly.

The two disks have ra )l eve thus provided ortion of t e entire Asshown, the con found satis- The tension on this spring tends to led witha shoul- YVhen the clutch is disengaged, these two shoulders are side byside and are adapted to be ret tion' by any suitable stop the block 330on a suitably operated lever 31, W hen so held, the clutch is shaftwhich reause the clutch to the member 11,

the shaft so that In the embodiment shown in the drawing, the shaftrotates in the directioi The spring 25 is strong enough sull'icient'lrecdoni to preto twist the disk It) with relcrcnce to the disk Thedish 1] is provided 11 to cause the engagement,

but is light enough so that the friction of th i of the ar- 1e member ma portion icy are free from the shaft, into a portion of such recessescontinuously rotating shalt passing 'l'rcely where they bind theshaft,-this movement thus musing the engagement of the clutch.

Each of the disks is provir ained in'this posi- 8Q as, for example,

e shalt in its constant rotation keeps the member 1]. relativelyadvanced with the shoulder 29 against the stop 30. If immediately on thewith drawal of the member 30, it is returned by the reverse operation ofthe lever 31 so that it stands in the path of the shoulder 29, it causesthe release of the clutch exactly at the end of the complete rotation.The clutch is thus well adapted for a single rotation clutch, for whichthere are a large variety of uses. The rollers 20 are retained againstlongitudinal displacement by suitable means, those shown being thecollar 15 on one side and the driven member 13 on the other; The removal of the collar 15 thus allows access to the interior for oiling orcleaning.

My clutch is very simple and cheap in construction, and is especiallycompact. It causes very little friction when disengaged and, immediatelyupon release, binds the driven member to the shaft, and then, at the endof the rotation, or 'at such other point as desired, automaticallydisengages itself.

It is to be understood that the amount that the outer wall of the recess21 is out of concentricity is very slight, so slight that it has beennecessary to exaggerate it to clearly show' it in the drawing. I havefound, for example, that in a clutch somewhat smaller than that shown inthe drawing, a hundredth of an inch variation between the deepest andthe shallowest portions of the'recesses 21 is sufficient to cause properfreedom at one end and binding at the other. v

Having thus described my invention, I claim: v

1. The combination, with a structure to be clutched of a pair ofmembers, and a clutching element under the influence of members, one ofsaid members both of said having an engagement with said element whichallows relative radial movement but restricts relative arcual movement,and the other member having an engagement with 'the element which allowsrelative arcual movement but restricts relative radial movement, wherebysaid element may be brought into clutching engagement with saidstructure. 7 5

2. The combination of a shaft, a pair of members mounted thereon side byside, a clutching roller extending across both of said members, one ofsaid members havin an engagement with said roller which al ows relativeradial movement but restricts relative arcual movement, and the othermember having an engagement with the roller which allows relative arcualmovement but restricts relativeradial movement.

In a friction clutch, thecombination of a member to be clutched, a pairof members side by side having overlapping recesses, one of which has acam wall, clutching member 1 occupying both of said recesses and adaptedto engage the member to be clutched, anda spring tending to move saidmembers first mentioned, one with reference to the other, to cause thecam wall to act on said clutching member.

4. The combination of a pair of members adapted to be journaled on ashaft and having recesses leading from their bores, said recessesoverlapping, a clutch member occupying such recesses, the recess in oneof said members substantially confining said clutching member againstrelative arcual displacement, and the recess in the other memberextending arcually but being constricted, whereby when one member movesrelatively to the other, the common clutching member may be caused tobind the shaft.

5; In a clutch. the combination of a shaft, a pair of members looselyjournaled thereon site by side, saidmcm'bers having recesses overlappingeach other, rollers parallel with the shaft, occupying such recessesandextending crosswise ofthe members, therecesses in one membersubstantially confining the rollers against relative arcual movement,but the recesses in the other disk allowing such movement but a'da tedto constrain the rollers toward the shatt when so moved.

67 The combination of a pair of clutching disks side by side, a commonclutching roller mounted within the two disks, one of said disks beingadapted to move the roller arcually and the other radially consequentupon its arcual movement, and a spring tending to give one of said disksa partial rotation rela tive to the other.

7. The combination of a pair of clutching.

members, side by side, a common clutching roller mounted within the twomembers, one

of said members being adapted to move the roller arcually and the otherradially consequent upon its arcual movement, a sprin tending to ive oneof said members a'partial rotation re at-ive to the other, a s'houlderon one of said members, and a movablecontrolling stop adapted to engagesaid shoulder.

or be freed therefrom.

8. The combinationof a shaft, a pair. of

disksloose thereon, said disks having rabbeted cooperating edges, a sring seatmg in the groove provided by suc rabbets, said,

sprin having one end secured to one disk.

and t is other to the other and tending to twist said disks about theaxis of the shaft, one'with reference to the other, means forrestraining such twistin and means whereby such twisting clamps thedisks to the shaft.

-9. The combination of a shaft, a pair of Y disks loose thereon, aspring havin one :end

secured to one diskf'and the other .tothe other and tending to twistsaid disks about.

the axis of the shaft, one with reference to its the other, means forrestraining such twistns, and adapted to engage the same and occupyaclamping roller parallel with th simftw recesses in both of said disks,one of said recesses allowing radial movement of the roller butconstraining it arcually, and the other of said recesses allowing arcualmovement but constraining it radially.

](i. The cmnbination of a shaft, a pair of disks loose thereon, saiddisks having rab- .gage the same and occupying recesses in both of saiddisks, one of said recesses serving to move the roller inte positionwhere the other recess binds it against the shaft;

11. The con'ibination of a shaft, a pair of collars or other suitablemembers ri id thereon, a pair of disks loosely journalcd on the shaftbetween said collars or members, rollers occupying recesses in saiddisks leading from their respective bores, said rollers being parallelwith the shaftand held against longitudinal displacement by said collarsor members, the recesses in one of the disks allowing the rollers radialii'io'veiiumt, but constrairn ing them against relative arcual movement,and the recesses in the other member allowing relative arcual movementof the rollers but constraining them radially, and a spring having itsends connected with said disks and tending to relatively twist them tocause said rollers to bind on the shaft.

I21 The combination of a shaft, a pairofdisks loosely journalcd on theshaft between suitable members, rollers occupying recesses, in saiddisks leading from their res 'ectivebores, said rollers beingparallelwlth the shaft and held against li'ingitudinal displacenient bysaid members, the recesses in one of the disks allowing the rollersradial movement, but constraining them against arcualmovement, and therecesses in the other member allowing relative arcual movement of therollers but restraining them radially, a spring havingits ends connectedwith said disks cause said rollers to bind disks being each providedwith a suitable shoulder, and a member ada ted to engage said shoulderand hold the dis (S against rbtation.

13. In a clutch, the combination of four cooperating members, one ofthem being adapted to move the second around the third into position tocause the fourth to move the second inwardly against the third,the-first and. .fourth members being side by side and the second memberextending transversely of both. I i

14. In a clutch, the combination of four cooperating members, one ofthem being and tending to relatively twist them to on the shaft, saidvIadapted to move the second around the third into position to cause thefourth to i move the second inwardly against the third, E the 'lirst andfourth members being sideby side and the second member c:\"tcndmgEtransvcrsely of both, a spring tending to {cause such movement, andmeans lor restraining such action.

of the four cooperating members, 10, 11, 12 and 20, the member 10 being:iu'lapted to move the member 2(li-nto position to'eause the member 11.to bind the member 20 against the member 12, the members 1!) and 11being journaied side by side around the member 12 and the member 20extending transversely of the mcn-ibcrs 10 and 11 and between them andthe member 12.

16. The combination;with a shaft, of a pair of meml'icrs side sidesurrounding control of each of said pair of members and adapted toengage the. shaft, one of said pair of members being formed with a camsurface, and means for imparting relative movement between that memberand the clutching member.

17. The combination of a shaft, a pair of disks loosely surrounding the.same, a roller under the influence of both disks and adapted toengagethe shaft to clutch it to one of them, one of the disks having acam surface, and means for im arting relative to effect the clutchingaction.

clutched, a pair of disks, a clutching member under the influence ofboth disks and adapted to engage the member to be clutched, one ofthedisks having a cam surface, and a spring havin its ends attached to thedisks respectively'and adapted to move one of them to cause theclutching action.

, .19. The combination of a shaft, )air of disks surrounding the shaftand loosely journaled thereon, a roller parallel with the shaft andoccupying recesses in both disks, one of the disks having a cam surfaceadapted to bind the roller against the shaft, and a spring connected tothe disks for giving them relative movement.

20. The combination of a shaft, a clutching member loosely surroumlingthe same and having a cam shaped recess, another member by the sidc'ofthe clutching member, a spring attached at its ends to the two membersmentioned, a roller adapted to engage the shalt to effect the c utclungaction, and means for restraining the action of the spring.

21. In a clutch, the combination with a shaft, of a disk loosely mountedconcentric of the shaft, a roller interposed between the disk and shaft,and adapted to engage the shaft, a cam surface on the inner periphery15. in a friction clutch, thecombination movement between such dis andthe roller.

the shaft, a clutching member under the 18. The combination of a memberto be when said twist takes place said third mer'n pair of clutchingdisks mounted side by one with reference to the other, and

&

of the disk contacting with the roller, a} member for moving the rollerabout the shaft, and a spring adapted to actuate said member to producerelative rotary movement between the disk'and roller without disturbingthe presentation of the disk to the shaft.

J22. In a clutch, the combination of a shaft, a pair of clutchingmembers side by side, both rotary and loosely journaled on the shaft, amember adapted to bind the shaft and under the joint control of bothmembers of said pair, and a spring having its ends secured to themembers of the pair respectively and serving to shift one with referenceto the other to effect the clutching action, I

The combination with a shaft, of a side and loosely journaled on theshaft, a spring located annularly about. the shaft and occupying arecess )IOVideLl by the disks and having one end secured to one disk and"the othcr' end to the other disk, and a clutching member between thedisks and shaft and controlled by said spring.

24. In a clutch, the combination of a mem her to be clutched, a pair ofrotary members mounted side by side, a member under the influence ofboth rotary members and adapted to engage the member to be clutched andthereby bind said rotary members thereto, a spring tending to twist onewith reference to the other, means for preventing such action, and meanswhereby such action when allowed effects the clutching engagement.. P

25. In a clutch, the combination of a shaft, a" pair of freely rotatingdisks mounted side by side, a spring tending to twist said disks 3,.clutching member under control of both disks and forced into clutchingengagement with said shaft by such twisting movement. 26. Thecombination with a shaft, of a pair of clutching members freelyjournaled thereon. side by side, a s ring tending to' twist said membersone wit reference to the other,- and a. third clutching member under thecontrol of the two members mentioned and adaptedto engage said shaft,one of suchtwo members having a cam surface whereby means for preventingthe disks on the shaft, transverse openings her is forced into clutchingaction with the shaft.

27. 'In a friction clutch, the combination of member to be'clutched, apair of disks i mounted side-by side, a spring tending to twist saiddisks one with reference to the other, a clutching member under theinfluence of both disks and adapted to be moved into clutchingengagement with the member to be clutched by such twist, a stop shoulderon each disk, and a movable member adap'ted to engage such shoulders andhold the disks idle or release them.

28. The combination of a shaft, a pair ofdisks freely journaled thereon,suitable longitudinal shifting of in said disks contiguous to theirbores, clutch mg rollers occupying said openings and under the influenceof both disks, the openings in one of the disks having a cam shapedouter surface, a spring tending to twist said disks one with referenceto the other, shoulders on the disks, and a movable stop member adapt edto engage or release both shoulders.

29. The combination of a pair of clutching members side by side, acommon clutch ing roller mounted in'openings in thetwo members, one ofthe members being adapted to move the roller arcually and the otherradially consequent upon its arcual movement, and means for giving oneof said members a partial rotation with respect to the other.

30. In aclutch, the combination of clutch members side by side, a rotaryshaft on which said members are journaled, and a clutch member common tothe two members mentioned and adapted to be forced by their relativerotary movement into clutching engagement between one of'said membersand the shaft.

31. The combination with a shaft, of a pair of clutching members freelyjournaled thereon, one of said members havin' a cam. slot, a rolleroccupying. such cam s under the controlof the other member, and meansfor moving the other member to carry the. roller about the shaft intothe confined portion of the slot to cause it to bind the shaft. 1

In testimony whereof, I hereunto afiix my signature in the presence oftwo witnesses.

JOHN J. ZEITZ.

\Vitnesses:

W. I) UNLAP, ALBERT H. BATES.

0t and

